80 results about "Visible spectral range" patented technology

An illumination system is provided, having a handpiece with an illumination unit and a semiconductor lighting element which provides a radiation of essentially blue light in the wavelength between 400 nm and 500 nm, and a light guide unit connectable to the handpiece. The light guide unit includes a fiber-optic light guide rod, having a proximal end face and a distal end face, and a sleeve. The fiber-optic light guide rod is fixed in the sleeve by a first adhesive in a portion of the proximal end face. The light guide unit has a converter, for converting the radiation of a semiconductor lighting element in the operating state into a distal radiation of the fiber-optic light guide rod at its distal end face. The distal radiation in the operating state has essentially white and / or color-neutral light, or colored light, a wavelength in the visible spectral range.

A method of operating a distance sensor includes emitting pulses of light from an emitter on the distance sensor at one or more designated wavelengths in a non-visible spectrum and receiving a set of reflected pulses of light with a receiver on the distance sensor that correspond to the pulses of light reflected off a surface of an object within a line-of-sight of the receiver. A point cloud is generated of an area including the surface of the object based on the set of reflected pulses of light. A pattern is identified on a surface of the object based on at least one of an area of increased or decreased reflectivity for the one or more designated wavelengths in the non-visible spectrum identified in the point cloud. Embedded data is decoded from the pattern on the surface of the object.

Apparatuses, systems, and techniques for reliable image data capture are disclosed herein. A system includes a sensor configured to receive light reflected off one or more objects in an environment. The sensor includes a first set of sensor pixels configured to detect a portion of the received light having wavelengths in the visible light spectrum. The sensor further includes a second set of sensor pixels configured to detect an additional portion of the received light having wavelengths in an infrared spectrum. The system further includes a filter component configured to reduce an intensity of the portion of the received light detected by the first set of sensor pixels while maintaining at least a minimum intensity of the additional portion of the received light detected by the second set of sensor pixels.

The invention relates to the technical field of biomedical engineering, and discloses a blood oxygen saturation degree detection method which comprises the following steps: S1, a multi-wavelength light source is utilized to irradiate a target area, and the light source comprises light with different wavelengths in a visible spectrum range; s2, collecting intensity information of light reflected or transmitted by the tissue; s3, constructing an oxyhemoglobin saturation model according to the received light intensity ratios under different wavelengths, and further provides an oxyhemoglobin saturation detection device which comprises a multi-wavelength light source module used for emitting light with different wavelengths in a visible spectrum range; and the optical sensor array is used for collecting the intensity information of the light reflected or transmitted by the skin tissue. By means of the multi-wavelength light source, machine learning optimization, personalized calibration and the environment sensing module, the accuracy and stability of blood oxygen measurement are remarkably improved, different individual differences and complex environment conditions can be adapted, and accurate blood oxygen saturation monitoring is ensured.

A system for imaging an eye of a subject during a medical procedure includes: at least two image capture units for stereoscopic imaging of the eye of the subject configured to sense light at least in infrared (IR) and visible spectra, at least one IR light source, and at least one visible light source for illuminating the eye of the subject with light in the IR and visible spectra. The system is configured to output imagery data emanating from the at least two image capture units for displaying thereof. The system is configured to balance between visible and IR illumination from the visible and IR light sources by controlling their intensity.

A device (1) for water treatment is specified, comprising a container (2) for receiving the water (9) to be treated, wherein - the container (2) is provided in places with a first coating (31), wherein the first coating (31) predominantly transmits radiation in the visible spectral range and predominantly reflects thermal radiation in the spectral range from 8 µm to 13 µm; and - the container (2) is provided in places with a second coating (32), wherein the second coating (32) predominantly reflects radiation in the visible spectral range and has an emissivity of at least 0.7 for thermal radiation in the spectral range from 8 µm to 13 µm. Furthermore, a process for water treatment is specified.

The present invention relates to a system of at least two types of switchable capsule luminescent pigments, wherein the capsule luminescent pigments are polymer particles with a diameter of 0.1-1000 µm, each containing at least one luminescent substance and a photochemically switchable absorber, wherein a first type of capsule luminescent pigment comprises a first luminescent substance emitting in a first color in the VIS spectral range; a second type of capsule luminescent pigment comprises a second luminescent substance emitting in a second color in the VIS spectral range, wherein the first and the second color are different;and the two capsule luminescent pigments each comprise the same photochemically switchable absorber, wherein the photochemically switchable absorber has a first and a second switching state, and the absorption spectrum of the photochemically switchable absorber in the second switching state strongly overlaps with the excitation spectra of the first and the second luminescent substance. The present invention further relates to a switchable luminescent printing ink comprising a system of at least two types of switchable capsule luminescent pigments as described herein, and to a security document, preferably a banknote, with a switchable luminescent print comprising a system of at least two types of switchable capsule luminescent pigments as described herein.

The invention discloses a hyperspectral data analysis method based on a plasma resonance metal film substrate. According to the metal nano-film substrate, scattering and signal absorption of a sample to be detected in a visible spectrum range can be remarkably enhanced through a plasma resonance effect, and meanwhile, a reflection spectrum from the substrate is effectively inhibited. The enhancement mechanism not only can realize a high contrast effect similar to dark field imaging in a reflection mode, but also does not need to use expensive optical components, so that the equipment cost can be effectively reduced. In addition, the hyperspectral data is efficiently processed and analyzed by combining a deep learning technology, and high-sensitivity and high-resolution microscopic hyperspectral imaging analysis is realized. According to the method disclosed by the invention, the spectral characteristic information of the sample can be remarkably enhanced under the condition of relatively low equipment cost, and the spectral information can be accurately and efficiently interpreted. The method is suitable for the fields of biomedicine, material science and environmental monitoring.

A translucent illuminated bunk cover for a boat trailer comprises a translucent ride pad having a unique optical transmittance curve that is linear across the visible spectrum, resulting in a wavelength neutral gray color. In one embodiment, the bunk cover has an outside leg having a generally planar body and longitudinally extensive ribs; a translucent ride pad having a crest and a plurality of longitudinally extensive ribs; and an inside leg having a generally planar body and longitudinally extensive ribs. In one embodiment, the trailer comprises a wheel set; a lateral framing member; and a pair of bunks extending longitudinally generally parallel with a longitudinal axis of the trailer. A groove is formed within a top surface of each one of the pair of bunks that is visible from above. At least one light source is located within the grooves, and a drain hole is also provided within the grooves.

A device is provided. The device comprises a stacked blue light emitting device comprising: a first electrode; a second electrode; a first emissive unit comprising a first emissive layer; a second emissive unit comprising a second emissive layer; and a first charge generation layer; wherein the first emissive unit, the second emissive unit and the first charge generation layer are all disposed between the first electrode and the second electrode; the first emissive unit is disposed over the first electrode; the first charge generation layer is disposed over the first emissive unit; the second emissive unit is disposed over the first charge generation layer; the second electrode is disposed over the second emissive unit; the first emissive unit emits blue light having a peak wavelength in the visible spectrum in the range of 380 nm to 500 nm that is defined as the first peak wavelength; the first emissive unit emits blue light having first CIE 1931 (x, y) colour space chromaticity coordinates of (x1, y1); the second emissive unit emits blue light having a peak wavelength in the visible spectrum in the range of 380 nm to 500 nm that is defined as the second peak wavelength; the second emissive unit emits blue light having a second chromaticity having second CIE 1931 (x, y) colour space chromaticity coordinates of (x2, y2); the second chromaticity is substantially different to the first chromaticity; and the first emissive layer and the second emissive layer comprise organic light emitting material, quantum dot light emitting material and / or perovskite light emitting material.

To provide luminescent adhesive decorations. [Solution] The present invention relates to a luminescent adhesive (1) for a timekeeping component, comprising: a first layer (10) made of an adhesive material; a second intermediate layer (11) containing a binder and containing 10 to 80% by weight of a fluorescent pigment that emits light in the UVA spectrum; and a third layer (12) that is semitransparent to ultraviolet light, contains a binder and contains 10 to 50% by weight of a fluorescent pigment that emits light in the visible spectrum.

A surgical instrument wrap having at least one or a plurality of fibrous layers that cooperate with at least one agent or dye layer that is generally not visible until the at least one or plurality of fibrous layers is damaged or disrupted. The at least one diffusible agent or dye layer diffuses or wicks into the disrupted or damaged area. A fluorescent dye, a reactive dye, a conjugant dye or an absorption wavelength of approximately 200-400 nanometers in one embodiment and an emission wavelength in the visible spectrum so that when the surgical wrap is damage or disrupted and then exposed to, for example, a fluorescent or ultraviolet light source, the agent or dye fluoresces to provide an indication to the user that damage to the wrap has occurred. The user can presume that the items or instruments in the surgical tray may be contaminated.

The invention relates to a glass-ceramic article (100) with a disc-shaped, transparent substrate (102) consisting of a glass-ceramic, wherein the substrate (102) has a first surface (110) as the usable side and a second surface (112) opposite the first surface (110) as the underside, wherein the substrate (102) has a transparency of at least 80%, wherein the substrate (102) exhibits a chromaticity shift of incident light of CIE standard illuminant D65 to α=0.05 to α=3 in transmission, wherein a reflective coating (114) with a reflectivity Rvis in the visible spectral range of more than 30%, preferably more than 40%, is applied to the second surface (112) of the substrate (102), wherein the coating (114) has at least three layers (104, 106, 108), wherein a first of the layers (104) that are closest to the second surface (112),a silicon-containing and / or aluminum-containing nitride layer or oxide layer or oxynitride layer with a thickness of 5 nm to 250 nm, a second layer (106) which is furthest apart in the coating (114) from the second surface (112), is a silicon-containing and / or aluminum-containing nitride layer or oxide layer or oxynitride layer, and a third layer (108) consisting of chromium or molybdenum arranged between the first layer (104) and the second layer (106).

Described are energy-efficient signal-transparent window assemblies and methods of fabricating thereof. These assemblies remain IR-blocking properties while allowing signal penetration and remain substantially transparent within the visible spectrum with no features detectable to the naked eye. This performance is achieved by isolating conductive layers into discrete cells via gap patterning. The second coating stack's line widths are at least 0.4 micrometer greater than the gaps among the primary stacks. The thickness of the primary stack increases from zero to full thickness near the gap, with a sidewall transition length exceeding 0.2 micrometers. The fabrication process involves lithography for patterning, PVD coating, and post-clean and high-temperature treatments. In some examples, a transparent organic thin layer is provided between the second coating stack and the primary stack or the substrate. Additionally, a thick dry-photoresist method in a special lithography process could significantly reduce manufacturing cost.

The invention discloses a gentamicin sulfate detection reagent and a detection method, and belongs to the technical field of pharmaceutical analysis. The gentamicin sulfate detection reagent is a mixed solution containing copper sulfate, sodium citrate and sodium carbonate, the concentration of the copper sulfate in the mixed solution is 10-30 g / L, the concentration of the sodium citrate in the mixed solution is 70-200 g / L, and the concentration of the sodium carbonate in the mixed solution is 100-140 g / L. The detection method of the gentamicin sulfate comprises the following steps: uniformly mixing a detection reagent of the gentamicin sulfate with a sample to be detected in equal volume, reacting at the temperature of 20-40 DEG C for 1-4 minutes, detecting a light absorption value of 600 nm, and judging the content of the gentamicin sulfate according to a standard curve. The invention develops a novel method for rapidly detecting the total concentration of gentamicin sulfate in the visible spectrum range, which is low in detection cost and suitable for the production process of veterinary drug injection preparations.

The present invention relates to an apparatus (100) for the detection of at least one target analyte in a sample to be analysed applied to a diffractive sensor (1), including a housing (101) delimiting within it a dark chamber (102); a support device (105) suitable for supporting and integrally holding the diffractive sensor (1), said support device (105) being movable within the dark chamber (102) and between the inside and outside of the dark chamber (102); a source (103) of laser light suitable for emitting laser light with a wavelength within the visible spectrum in the darkroom (102); a screen (107) arranged in the dark chamber (102); a vision system (111) configured to capture images on the screen (107); and a control unit operatively connected to the laser source (103), the support device (105) and the vision system (111).

A sensor window may include a substrate and a set of layers placed on the substrate. The set of layers may include a first subset of layers with a first refractive index and a second set of layers with a second refractive index different from the first. The set of layers may be associated with a threshold transmittance in a perceptible spectral range. The set of layers may be set to a particular color in a visible spectral range and may be associated with a threshold opacity in the visible spectral range.

Photopolymer compositions include a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and / or additional materials. The at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator. At least one of the colouring agents has a structure according to formula (II), and the at least one coinitiator has a calculated oxidation potential (E); determined according to the formula (1).

An optically variable security element is provided for protecting objects of value. The reflective area region includes two independent relief structures, which are arranged at different levels in the z-direction and form a lower-level relief structure and a higher-level relief structure. The higher-level relief structure is supplied with a first reflection-enhancing coating following the relief profile, and the lower-level relief structure is supplied with a second reflection-enhancing coating following the relief profile. The first reflection-enhancing coating is formed in the visible spectral range with a reflection and transmission in the visible spectral range, so that the higher-level relief structure shows a first optically variable effect in a first color, and the lower-level relief structure shows a second optically variable effect through the first reflection-enhancing coating, wherein the second optically variable effect shows itself in a second, different color.

Organic light-emitting component (100), comprising a translucent substrate (1) on which an optical output coupling layer (2) is applied, a translucent electrode (3) on the output coupling layer (2), an organic functional layer stack with organic functional layers, comprising an organic hole-conducting layer (4) on the translucent electrode (3), at least one organic light-emitting layer (5) on the hole-conducting layer (4) and an organic electron-conducting layer (6), and a reflective electrode (7), including at least one organic light-emitting layer (5) has a distance of greater than or equal to 150 nm to the reflecting electrode (7), where the organic functional layer stack at least an organic functional layer that is thicker than 5 nm and has an absorption coefficient k of less than or equal to 0.005 for wavelengths greater than 450 nm and is doped as an electron-conducting layer (6) arranged between the reflecting electrode (7) and the at least one light-emitting layer (5), where the translucent electrode (3) for wavelengths larger as 450 nm has an absorption coefficient k of less than or equal to 0.005 and a total transmission in the visible spectral range of greater than or equal to 80%, wherein the reflecting electrode (7) at least one comprising an optical matching layer, wherein the at least one optical matching layer is conductive and comprises one or more TCO layers arranged one above the other in a Bragg mirror-like arrangement, and wherein an encapsulation arrangement over the electrodes (3,7) and the organic layers (4,5) wherein the encapsulation arrangement comprises a layer sequence with a plurality of thin layers, each having a thickness between including one atomic layer and including 10 nm, wherein the thin layers are applied by means of an atomic layer deposition (ALD) process.

The present invention relates to a system of at least two types of switchable capsule luminescent pigments, wherein the capsule luminescent pigments are polymer particles with a diameter of 0.1-1000 µm, each containing at least one luminescent substance and one photochemically switchable absorber, wherein a first type of capsule luminescent pigment comprises a first luminescent substance emitting in a first color in the VIS spectral range; a second type of capsule luminescent pigment comprises the first luminescent substance and a second luminescent substance emitting in a second color in the VIS spectral range, the first and second colors being different; and the two capsule luminescent pigments each comprise the same photochemically switchable absorber, wherein the photochemically switchable absorber has a first and a second switching state, and the absorption spectrum of the photochemically switchable absorber in the second switching state significantly overlaps with the emission spectrum of the first luminescent substance.The present invention further relates to a switchable luminescent printing ink comprising a system of at least two types of switchable capsule luminescent pigments as described herein, and to a security document, preferably a banknote, with a switchable luminescent print comprising a system of at least two types of switchable capsule luminescent pigments as described herein.

Solid-state lighting devices including light-emitting diodes (LEDs) and more particularly identification markers for LED packages and related methods are disclosed. Identification markers may include materials incorporated within LED packages that are transparent in a visible spectrum but detectable when illuminated with light outside the visible spectrum. When radiated with light outside the visible spectrum, identification markers may provide light in the visible spectrum. Alternatively, identification markers may provide light outside the visible spectrum that is detectable with equipment capable of detecting nonvisible light. Identification markers are generally configured to not be readily visible under inspection as a way to make LED packages more difficult for copying in counterfeit products.

The invention relates to a method for preparing a microdevice emitting in the ultraviolet or visible spectral range (or a microLED-type device), the microdevice obtained by implementing said method, and the uses of said microdevice, particularly for wireless optical communication applications, as a print head in maskless photolithography systems, or in the healthcare field. Figure to be published with the abbreviation: 5

The present disclosure relates to injectable compositions sterile injectable fluid compositions comprising a polysaccharide having a color in the visible spectrum, methods of forming the same, kits containing the same, and methods for performing agent-assisted procedures in a patient using the same.

A device may include a sensor window. The sensor window may include a substrate. The sensor window may include a set of layers disposed onto the substrate. The set of layers may include a first subset of layers of a first refractive index and a second set of layers of a second refractive index different from the first refractive index. The set of layers may be associated with a threshold transmissivity in a sensing spectral range, and may be configured to a particular color in a visible spectral range and associated with a threshold opacity in the visible spectral range. The device may include a spectral sensor device aligned to the sensor window and including at least one sensor element to receive light in the sensing spectral range and provide a plurality of sensing functionalities based on at least one measurement of the light in the sensing spectral range.

A homogeneous laser illumination system for microscopy applications, based on the use of multimode optical fibers (MMF), is described. The system's operating principle relies on the superposition of dynamic speckle patterns generated from several multimode fibers. These patterns are created by applying random, high-frequency perturbations (tens of kilohertz) induced by a piezoelectric actuator that perturbs the optical fibers. The superposition of these patterns reduces illumination contrast, achieving a uniform light distribution across the field of view (FOV). The system's modularity and adaptability allow for its integration into existing microscopy setups. Furthermore, it can be configured to operate with standard commercial objective lenses, including immersion lenses, and adjusted to reduce photobleaching in fluorescent samples.The system uses multimode optical fibers and requires no additional infrastructure to manage vibrations or mechanical noise. It is suitable for fluorescence microscopy and has been successfully tested with wavelengths across the visible spectrum. The system enhances the illuminated area and optimizes the generation of homogeneous light patterns, providing a high-performance and efficient solution for obtaining high-quality images in microscopic studies.

A rearview mirror assembly includes a housing, a camera, and a display coupled to the housing. The display includes a backplane connected to a plurality of chiplets that include an array of micro-LEDs. At least one of an infrared emitter configured to project light in the infrared spectrum and a sensor are coupled to and in operable communication with at least one of the chiplets. The sensor is selected from a group comprising a light sensing module configured to detect light in the visible spectrum, an infrared sensing module configured to detect light in the infrared spectrum, and a temperature sensor configured to detect a temperature proximate the temperature sensor.

A method includes providing a silicon mold that defines, on a surface, a array of recesses, applying onto the surface a polydimethylsiloxane (PDMS) composition so that the composition fills the recesses, curing the PDMS composition to form an elastomeric body; and demolding the elastomeric body from the silicon mold to obtain a freestanding flexible sheet whose molded surface carries a negative replica of the recesses and exhibits a total hemispherical reflectance of less than 0.4% across a visible light spectrum.

The invention relates to a security element for producing value documents, such as banknotes, checks or the like. The security element (4) has a front side (2) and a rear side (78). The security element (4) has a main body (37) which comprises a lattice structure (38, 49) extending over a region, on which a reflective layer (52) is arranged, and which shows at least one color in plan view and / or transmissive. The lattice structure (38, 49) has at least two sub-regions (10-14 and 22-32) which are not recognizable in the visible spectral range, in which sub-regions the lattice structure (38, 49) are each uniformed, and wherein the lattice structure (38, 49) differs between the sub-regions (10-14 and 22-32) with respect to at least one lattice structure parameter (h, d), the sub-regions (10-14 and 22-32) are arranged such that the sub-regions (10-14 and 22-32) differ with respect to their absorption in the near-infrared range.

The invention relates to a method for identifying a glass molding machine from a plurality of such machines that enable the forming of a glass melt. The identification method comprises the steps of producing a plurality of glass containers (1), writing a unique identification mark (3) on each produced glass container (1) corresponding to its glass molding machine (4) with an ink readable by a light source (30) having a wavelength outside the visible light spectrum, and reading the written identification mark (3) with a reader (40) to associate the glass container (1 ) with the glass molding machine (4).